Falkirk · Scotland
Bantaskin Sand Mastic
Sand mastic in Bantaskin from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Mastic round period door frames that has failed
- Cement or filler used on old window joints that has cracked
- Open joints round the window box
How it works
We bring everything the job needs with us, so you do not need to buy or prepare anything. After a quick look at the joints together, we protect the area and start. Most jobs take anything from a few hours to a full day, depending on how many windows. For a place like Bantaskin, longer drives are planned in advance. Mention tracks, gates, ferries or anything else about the route.
- First, we look at the surrounds with you and agree what needs doing.
- Old, loose mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The mastic is finished to sit tidily against the stone or brick.
Getting ready for the visit
- Tell us about any water getting in
- Clear items away from the joints we are working on
- Tell us about any previous sealing or DIY attempts
Getting a quote
To get a quote, send an email to info@mrmastic.co.uk and tell us where the job is and what the problem looks like. You’ll have a clear quote before we start.
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Sand mastic in Bantaskin, done properly
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s made from sand and a linseed-oil-based binder, applied by hand. On period homes, it looks right where silicone wouldn’t. We work on period & listed homes, brick reveals and timber door frames, and the jobs we see most are draughty sash windows at the surround and a silicone bead on a sash window that spoils the look.
Older stone-built homes in Scotland often have sash and case or timber windows set in stone. Those suit a traditional sand mastic or a neutral-cure sealant, not an acetoxy silicone that can attack some stone.
Our work is backed for twelve months.
- Where
- Bantaskin (FK1, FK2)
- Region
- Falkirk
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
How we quote for sand mastic
There’s no set price list. The quote depends on:
- Mould in or behind the old joints
- Whether old sealant or filler has to be cut out
- Working hours on commercial sites
- How many areas need sealing
The cost reflects the work involved, not guesswork. That’s why we ask a few questions first.
What to tell us for a quote
To help us quote quickly, let us know:
- What the problem is, such as mould, gaps, leaks or cracking
- Roughly how big the job is
- Where the job is, and your postcode
- A few pictures by email, if you can
There’s no standard price list. Instead, your job gets its own clear quote. To get started, drop us a line at info@mrmastic.co.uk.
What sand mastic looks like in Bantaskin
Sash and case windows are common in older Scottish homes, and the joint between the box frame and the stone or render is traditionally pointed with sand mastic. Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and failed outside joints work against that.
Letting a property close to Falkirk High station? Then older sash windows in a rental need their mastic kept sound to keep the weather out. Schools such as Falkirk High School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
Bantaskin is about 1 mile west of Falkirk, in Falkirk. Homes, rented property, offices and hotels in Bantaskin is covered for sand mastic, old or new, large or small. Every job comes with our one-year guarantee. Across Falkirk, we cover 50 places, Bantaskin among them. Our Glasgow page covers work nearby (21 miles or so).
Work in FK1 and FK2 works the same way as everywhere else we cover. Whether your property is on Well Road, Union Road and Kilns Road or a nearby road, our applicators can take on the job. We also cover Tamfourhill (1 mile west), High Bonnybridge (3 miles west), Greenhill (3 miles west), Slamannan (4 miles south) and Binniehill (5 miles south). We also work in nearby towns such as Grangemouth (3 miles east), Bo'ness (8 miles east), Denny (4 miles west), Bonnybridge (3 miles west), Polmont (4 miles east) and Brightons (4 miles east). Being one of Falkirk’s larger places, Bantaskin has homes, rented property and businesses of every kind.
Landmarks near Bantaskin
Typical jobs here are in homes near Comely Park School, Bantaskine and Canal Inn and the streets around them. Bantaskin’s nearest station is Falkirk High station, about 0.7 miles south-east of the centre. Other landmarks nearby include Callendar House (1.5 miles east) and Falkirk Community Hospital (0.6 miles east). The countryside around Bantaskin includes Callendar Lake.
Aftercare tips
How long the joints last depends on use and care. Here’s what we suggest:
- Keep modern sealant off the mastic
- Ask a joiner to look at soft timber first
- Leave the new mastic unpainted
- Take care around the mastic when scraping paint
Don’t touch or press the mastic while it hardens. It forms a skin fairly soon, but takes longer to harden fully.
An open joint round the box lets weather through. Left, the gap tends to get bigger as more mastic falls out.
Your questions about sand mastic in Bantaskin
I let a flat near Falkirk High station. Can you help?
Yes. We work for letting agents and landlords as well as homeowners, and several properties can go on one quote. You can drop us a line at info@mrmastic.co.uk with the details for a clear quote.
Do you cover smaller places like Bantaskin?
Yes, we do. Our work covers the whole of Scotland, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Can I do it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Can you replace silicone on a period window with sand mastic?
Yes. We remove the silicone and clean the joint before the sand mastic goes in.
Can you match the sealant colour?
We’ll suggest a colour to suit the surroundings. The product needed can limit the range.
Can I paint the new mastic?
Sand mastic is normally left unpainted, as guidance on traditional windows advises. Talk to us before any painting near it.
What exactly is sand mastic?
It’s sand mixed with a linseed-oil-based binder for the joint between timber frames and masonry.
Do I need to be at home?
Access is agreed with you when the job is booked. Indoors, that normally means someone at home.
How the job changes by surface
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. Sand mastic seals the joint round it.
Tenement and terrace windows
Where a building is shared, window work may involve neighbours, so check who is responsible first.
DIY sealant or a professional job?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
What we’re called out for in Bantaskin
Decorating can disturb tired mastic. It’s often found when windows are being prepared for paint.
Keep an eye out for these signs:
- Old sand mastic that has cracked, crumbled or fallen out
- Gaps where the frame meets the masonry
- A silicone bead on a sash window that spoils the look
- Weathered mastic on the most exposed windows
In the older streets around Falkirk, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Comparing quotes
- Who turns up on the day
- Whether you can choose the colour
- How long to leave it before use
- What the quote includes, VAT included or not
Why it’s worth doing now in Bantaskin
Before painting the windows, it pays to renew the mastic. Painting over failed mastic doesn’t seal it and traditional guidance is to leave the new mastic unpainted. Around Bantaskin, water from a failed joint in an older stone home can soak into timber and plaster.
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part.
What you get with us
- We never seal over old sealant
- Every job guaranteed for a year
- Anti-fungal silicone where joints get wet
- Arbo and Everbuild products
Take a look at how sealant jobs are priced or customer reviews.